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Time-of-flight images of Mott insulators in the Hofstadter-Bose-Hubbard model

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2015

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Journal Article

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NO

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Abstract

We analyze the momentum distribution function and its artificial-gauge-field dependence for the Mott insulator phases of the Hofstadter-Bose-Hubbard model. By benchmarking the results of the random-phase approximation approach against those of the strong-coupling expansion for the Landau and symmetric gauges, we find pronounced corrections to the former results, which is a clear manifestation of the critical role played by quantum fluctuations in two dimensions.

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American Physical Society (APS)

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Optics , Physics

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Physical Review A

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10.1103/PhysRevA.92.023636

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https://hdl.handle.net/20.500.14288/403

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